What is the value of a in the equation 5a – 10b = 45, when b = 3?

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

Find the unit rate. enter your answer as a mixed number. a fertilizer covers 2/3 square foot in 1/2 hour.